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🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 2, 2026)! At many mines, substantial mineral reserves remain underground after primary extraction – in pillars, caved zones, or uneconomic areas. Re-mining makes it possible to recover these reserves, but requires confirmation of safety under the conditions of an already formed natural-technogenic rock mass. The authors of the article conducted pilot tests at the BKPRU-2 mine of PJSC Uralkali (Verkhnekamsk deposit). The testwork revealed that caved rocks are prone to inrush, and the strength properties of the layer vary widely: from 0.4–3.8 MPa in caved zones to 16.2–24.0 MPa in pillars. The displacement rates of the working contours in the natural-technogenic layer are 22–28 mm/year, which falls within the standard range. The main conclusion: the re-mining method has confirmed its feasibility and safety. Its implementation will increase the sylvinite ore recovery factor by an average of 16%, extend the service life of operating mines, and bring previously written-off reserves into production – without the need for new mine construction. For the potash industry, this is a strategic reserve comparable to the commissioning of new levels. 📖 Read more: Baryakh A.A., Beltyukov N.L., Smirnov E.V., Zdanovich M.Ya. Pilot testing of sylvinite ore reserves re-mining method. Mining Science and Technology (Russia). 2026;11(2):141–150. https://doi.org/10.17073/2500-0632-2026-02-1095 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #InEnglish #MST #MiningScience #PotashOres #Sylvinite #ReMining #VerkhnekamskDeposit #Geomechanics #MineWorkingsStability #MiningEngineering